US4318620A - Apparatus for producing bituminous coated products from aggregates, bitumen and solid materials likely to deteriorate at high temperature - Google Patents

Apparatus for producing bituminous coated products from aggregates, bitumen and solid materials likely to deteriorate at high temperature Download PDF

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Publication number
US4318620A
US4318620A US06/217,493 US21749380A US4318620A US 4318620 A US4318620 A US 4318620A US 21749380 A US21749380 A US 21749380A US 4318620 A US4318620 A US 4318620A
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United States
Prior art keywords
drum
zone
products
aggregates
wall
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Expired - Lifetime
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US06/217,493
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English (en)
Inventor
Louis Malipier
Guy Marconnet
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Creusot Loire SA
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Creusot Loire SA
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Assigned to CREUSOT-LOIRE reassignment CREUSOT-LOIRE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MALIPIER LOUIS, MARCONNET GUY
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1036—Mixing in a rotary receptacle for in-plant recycling or for reprocessing, e.g. adapted to receive and reprocess an addition of salvaged material, adapted to reheat and remix cooled-down batches
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/026—Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral-type inserts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/1095—Mixing containers having a parallel flow drum, i.e. the flow of material is parallel to the gas flow

Definitions

  • the invention concerns an apparatus for producing bituminous coated products from aggregates, bitumen and solid materials which can undergo deterioration if they are exposed to a high-temperature environmemnt.
  • the products containing bitumen must be introduced into the drum in a zone protected from direct contact with the flame of the burner, which generally enters at the inlet end of the drum, so as to prevent degradation of these bituminous materials under the action of an atmosphere at too high a temperature.
  • a set of specially shaped lifting devices is provided on the surface of the drum in this zone, allowing the curtain of material to form progressively in the drying zone while leaving a central space free for the flame to develop.
  • Such an apparatus also has the advantage of preventing aggregates introduced into the drum from falling back into the flame, thereby the formation of dust from the break up of these aggregates under the action of the heat of the flame.
  • Such an apparatus is unsuitable for solid materials containing bitumen, such as recovered bituminous products, or any other solid material subject to deterioration in a high-temperature environment, which must be introduced into the drum.
  • Such solid materials may be, for example, rubberized compounds, plastic materials, sulfur, coloring products such as a metal oxide or bitumen in flakes.
  • the recycled materials are introduced into the drum through openings provided in the wall of the drum, and mechanical devices, such as hatches closing by gravity, prevent the material leaving the drum at this intermediate zone for introducing recycled materials.
  • the object of the invention is therefore an apparatus for producing from aggregates, bitumen and solid materials, bituminous coated products such as recycled coated products which can deteriorate if exposed to a high-temperature environment, comprising a drum rotatable about its axis, slightly inclined from the horizontal, in a downward direction from its inlet end to its outlet end, inside which drum flow in the same direction, the solid products and the hot gases coming from a burner entering through the inlet end of the drum through which fresh aggregates also enter, brought by a supply means into the first zone of the drum downstream of this inlet end, or introduction zone, the drum being supplied with solid materials, such as recycled coated products, at an intermediate zone disposed between the inlet end and the outlet end through which the products flowing in the drum are removed and proceeding in the direction of flow of the products, to a hot mixing zone into which the bitumen is introduced and in which the products are raised over the whole section of the drum by lifting devices and brought into contact with the hot gases passing through the drum.
  • the apparatus is designed to prevent contact between solid materials such as the recycled coated products and an atmosphere at too high a temperature, as well as direct contact between fresh aggregates and the flame of the burner, and to allow solid materials to be introduced into the drum by means of a simple apparatus which has no component capable of moving with respect to the drum.
  • the drum includes, between the introduction zone and the intermediate zone, a zone for transferring fresh aggregates in which shield-paddles having a concave surface, directed towards the inner wall of the drum, are attached to this inner wall.
  • the intermediate zone has, successively in the direction of flow of the products, a first part in which the inner wall of the drum has lifting paddles for forming a continuous curtain of solid products falling over the whole section of the drum, and a second part at which the drum, surrounded by a fixed means for introducing solid materials and presenting openings passing through its wall or first casing, has a second cylindrical casing coaxial with the first casing, smaller in diameter and equipped on its inner surface with lifting devices for forming a continuous curtain of solid products falling over the whole section of the second casing, while helical blades are disposed between the inner wall of the drum and the outer surface of the second casing so as to drive the solid materials introduced at this point in the drum towards the hot mixing region.
  • FIG. 1 is a sectional elevation through a vertical plane of symmetry of the drum and attached apparatuses associated with it.
  • FIGS. 2, 3, 4 and 5 are transverse sections of the drum at sections 2--2, 3--3, 4--4 and 5--5 of FIG. 1.
  • FIG. 1 shows a drum whose outer casing 1, cylindrically shaped, has an inlet end 2 and an outlet end 3, the axis 4 of the cylinder constituting the drum being slightly inclined from the horizontal so that the inlet end of the drum is higher than the outlet end.
  • Fresh aggregates 7 brought to the drum by a belt conveyer of conventional type also enter at the inlet end 2 of the drum.
  • the outlet end 3 of the drum opens into a hopper 10 which allows the gases of the burner which have passed through the drum and particles which may be entrained to be evacuated and the coated products to pass through (arrow 12).
  • a conduit 14 for supplying hot molten bitumen enters into the drum through its outlet end 3 terminating in a spraying nozzle 15 which allows the bitumen to be distributed over the solid materials in the last zone of the drum.
  • the drum comprises in sucession from its inlet end to its outlet end, i.e., from right to left in FIG. 1, an introduction zone 16, a transfer zone 17, an intermediate zone 18 and a mixing zone 19 in which the bituminous binder is added by means of spraying nozzle 15.
  • the flame 9 of the burner extends into the zones 16 and 17, i.e., into the introduction zone and into the transfer zone.
  • FIG. 1 Reference will be made to both FIG. 1 and FIGS. 2, 3, 4 and 5 to describe these different zones in succession.
  • projecting blades 20 are disposed helically on the inner wall surface of the drum, so that the fresh aggregates 7 arriving through the inlet end of the drum are rapidly introduced into the transfer zone 17 after a very short transit through the zone 16 in which these materials 7 remain in contact with the wall of the drum. During this rapid transfer to a zone away from the flame, the materials are hardly dried at all and produce no dust.
  • the drum is equipped in the transfer zone 17 with paddles 22 held spaced from the wall of the drum by spacers 23, these paddles being shield-paddles constituted by plates folded in a U, whose hollow surface for receiving the material 7 is directed towards the wall 1 of the drum.
  • the paddles 22 constitute shields protecting the material 7 comprising the fresh aggregates.
  • the aggregates contained in the shield-paddles 22 also protect the wall 1 of the drum against the heat of the flame of the burner by absorbing part of the heat of this flame.
  • the aggregates therefore undergo heating in this zone and begin to dry by conduction of heat through the shield-paddles.
  • This arrangement also improves the yield of the installation, since the heat removed through the wall 1 of the drum in this zone is considerably reduced.
  • the fresh aggregates advance through the transfer zone until they reach the intermediate zone 18.
  • small angle-irons may be disposed on the inner wall of the drum.
  • the intermediate zone has two distinct parts, the first part, whose section is represented in FIG. 3, being a zone where a continuous curtain of material is formed and the second part, represented in FIG. 4, a zone for introducing solid materials which cannot withstand excessive temperatures.
  • the drum has on its inner surface several sets of lifting paddles 28 angularly staggered lengthwise along the drum for forming a dense continuous opaque curtain of aggregates 7 over the whole transverse section of the drum.
  • These lifting paddles are shaped to present a concavity towards the inner surface of the drum and are constituted by folded plates.
  • the drum is surrounded at the second part of the intermediate zone by a fixed structure for introducing recycled materials 29, comprising an introduction hopper 27 and a closed cylindrical body 30 surrounding the drum with a slight clearance allowing the latter to rotate.
  • the drum in addition to its outer 1, has an inner casing or second casing 31 coaxial with the first which extends over the whole second part of the intermediate zone up to the inlet of the mixing zone 19.
  • this inner shell 31 bears sets of paddles 32 comparable to the paddles 28 of the first part of the intermediate zone.
  • chutes 36 are fixed, projecting outwards and allowing materials entering through the hopper 27 to be introduced into the space between inner casing 31 and the outer casing of the drum 1, equipped with helical blades 35.
  • the chutes 36 have inclined guiding surfaces 33 for introducing materials through the openings 34 in the drum 1.
  • the helical blades 35 are disposed between the outer or first casing of the drum and the shell 31 constituting the second casing so that when the drum and the shell 31 which is solid with the outer casing of the drum are rotated, the helical blades 35 drive the recycled products 29 towards the hot mixing zone 19 in which these recycled materials mix with the fresh aggregates 7 arriving via the inner part of the shell 31.
  • the fresh aggregates are intensively and completely dried, since they are exposed over the whole section of the drum to hot gases coming from the burner at the first part and the second part of this intermediate zone.
  • the aggregates 7 which enter the hot mixing zone are consequently perfectly dry.
  • the curtain of materials formed over the whole length of the intermediate zone first at the first part of this zone over the whole section of the drum and then inside the shell 31, smaller in diameter than the diameter of the drum, completely insulates the hot mixing zone from the flame of the burner, and therefore completely protects the recycled materials arriving at the end of the shell 31, and also the liquid bitumen distributed by the spraying nozzle 15 over the mixture of recycled materials and fresh aggregates.
  • the inner wall of the drum has lifting paddles with a degree of concavity which allow the materials to be raised and these materials to be dropped over the whole section of the drum in which these materials are exposed to gases circulating in the drum at the zone 19.
  • Hot mixing occurs in the zone 19, so that the mixture of fresh aggregates, liquid bitumen and recycled aggregates, combined with the action of the hot gases circulating in the drum at this point, produces coated materials equivalent in quality to materials produced solely by the mixing of dried fresh aggregates and bitumen, the bitumen of the recycled aggregates being re-melted under the action of the heat.
  • the materials passing out through the face 3 of the drum and into the hopper 10 are therefore constituted by coated products which are entirely comparable to coated products obtained by methods which do not make use of recycled materials.
  • the principal advantages of the apparatus according to the invention are on the one hand, the prevention of fresh aggregates falling into the flame of the burner by means of shield-paddles which also isolate the drum wall with these aggregates, and, on the other hand, the complete insulation of the zone into which the recycled materials and the liquid bitumen are introduced from the zone where the flame is located, which is confined behind a very dense curtain of material.
  • a further advantags is the fact that the apparatus for introducing recycled materials into the drum has no component which is movable with respect to the drum.
  • the shape of the blading described is far from being the only one possible, and lifting paddles with a sharp-edged or a curved shape with a larger or smaller radius of curvature can just as well be used.
  • the shield-paddles of the transfer zone of the drum can have a sharp-edged shape and be made of folded plates with a section comparable to that represented in FIG. 2, or alternatively can be constituted by a plate bent to a curved surface. In all instances, the hollow surface or the concavity of the curved surface is directed towards the inner wall of the drum.
  • the apparatus is used to produce coated products from fresh materials and a certain proportion of recycled material. But it is also possible to use the apparatus according to the invention to produce coated materials from fresh materials and a certain amount of additional elements which cannot stand exposure to excessive heat, such as rubberized compounds, plastic materials, sulfur, coloring products such as iron oxide or bitumen in flakes.
  • the invention is particularly but not exclusively applicable to the production of bituminous coated products for road surfacings.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Machines (AREA)
  • Coating Apparatus (AREA)
  • Glanulating (AREA)
US06/217,493 1980-01-11 1980-12-17 Apparatus for producing bituminous coated products from aggregates, bitumen and solid materials likely to deteriorate at high temperature Expired - Lifetime US4318620A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8000570 1980-01-11
FR8000570A FR2473578B1 (fr) 1980-01-11 1980-01-11

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US4318620A true US4318620A (en) 1982-03-09

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US (1) US4318620A (fr)
EP (1) EP0032468A3 (fr)
JP (1) JPS6029546B2 (fr)
CA (1) CA1152737A (fr)
FR (1) FR2473578B1 (fr)

Cited By (16)

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Publication number Priority date Publication date Assignee Title
US4738539A (en) * 1985-05-24 1988-04-19 Ermont S. A. Process and device for fabricating bituminous coated products from aggregates enclosing a large quantity of fines
US4954995A (en) * 1988-05-13 1990-09-04 Ermont C. M. Device and method for preparing bituminous products
US5073030A (en) * 1990-01-25 1991-12-17 Banks Edgar N Drum apparatus for mixing asphalt compositions
US5203693A (en) * 1991-10-01 1993-04-20 Astec Industries, Inc. Rotary drum dryer having internal flights
US5397177A (en) * 1992-02-03 1995-03-14 Swisher, Jr.; George W. Asphalt production plant having a two-burner dryer with increased exhaust capacity
WO1995030522A1 (fr) * 1994-05-09 1995-11-16 Astec Industries, Inc. Secheur a tambour comportant des raclettes de protection refroidies par des agregats
US5470146A (en) 1986-06-30 1995-11-28 Standard Havens, Inc. Countercurrent drum mixer asphalt plant
US5538340A (en) 1993-12-14 1996-07-23 Gencor Industries, Inc. Counterflow drum mixer for making asphaltic concrete and methods of operation
WO1998049398A1 (fr) * 1997-04-25 1998-11-05 Asfaltteknik I Gällö Ab Procede et dispositif permettant de preparer de l'asphalte
DE10240249B3 (de) * 2002-08-31 2004-02-26 Enerco Bv Anlage zum Trocknen und Aufbereiten von rieselfähigem mineralischem Gut
CN102252515A (zh) * 2011-04-29 2011-11-23 兰州兰石成套设备有限责任公司 兰炭烘干机的扬料装置
GB2491593A (en) * 2011-06-07 2012-12-12 Chinook Sciences Ltd Waste processing apparatus
US8993931B2 (en) 2009-07-09 2015-03-31 Ammann Italy S.P.A. Rotary drier for plants for the production of bituminous macadams with the use of recycled materials
US20150345085A1 (en) * 2014-05-29 2015-12-03 Robert E. Frank Multiple-entry hot-mix asphalt manufacturing system and method
US9243373B2 (en) 2009-07-09 2016-01-26 Ammann Italy S.P.A. Drying cylinder of the type for plants for the production of bituminous macadams
WO2019097430A1 (fr) * 2017-11-14 2019-05-23 Qmax Solutions Colombia Dispositif et procédé de déshydratation de fluides et de coupes

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ATE5904T1 (de) * 1980-02-12 1984-02-15 Creusot-Loire Vorrichtung zur herstellung umhuellter bituminoeser produkte fuer strassendecken.
JPS61216906A (ja) * 1986-02-22 1986-09-26 大成道路株式会社 アスフアルト舗装廃材を利用した熱交換式加熱アスフアルト混合物の製造装置
DE3883516D1 (de) * 1988-01-30 1993-09-30 Wibau Gmbh Vorrichtung zur Freihaltung des Flammenbereiches eines direkt befeuerten Drehrohrofens sowie die Anordnung und Ausbildung von Hubschaufeln.
DE3815104A1 (de) * 1988-05-04 1989-11-09 Deutag Mischwerke Gmbh Drehofen zum trocknen und/oder mischen von rieselfaehigem material
FR2632669B1 (fr) * 1988-06-13 1990-10-05 Ermont Cm Dispositif de preparation de produits enrobes bitumineux constitue par un tambour
DK420888D0 (da) * 1988-07-27 1988-07-27 Pedershaabs Maskinfabrik A S Fremgangsmaade og anlaeg til fremstilling af asfalt og lignende produkter
US5080581A (en) * 1991-04-10 1992-01-14 Combustion Design Corporation Method and apparatus for drying waste materials
CN102331168A (zh) * 2011-09-21 2012-01-25 孙超 一种带有助动板的热风烘干机
JP2014196493A (ja) * 2014-04-11 2014-10-16 マニユフアクチヤリング・アンド・プロセス・テクノロジーズ・エルエルシー（デイー／ビー／エイ エムピー テクノロジーズ） 顔料擬似粒子の形成方法
CN107504779B (zh) * 2017-09-27 2022-10-14 江苏徐工工程机械研究院有限公司 叶片结构、烘干滚筒及烘干设备

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US4147436A (en) * 1977-08-29 1979-04-03 Cmi Corporation Method and apparatus for producing hot mix asphalt utilizing recyclable asphalt aggregate
US4174181A (en) * 1978-04-17 1979-11-13 Cmi Corporation Method and apparatus for establishing aggregate cascade zones in an apparatus for producing hot mix asphalt

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US3693945A (en) * 1971-01-20 1972-09-26 Cmi Corp Asphalt preparation plant
DE2432103B2 (de) * 1974-07-04 1976-06-24 Ima-Ingenieure für Mineral-Aufbereitung Koenitzer KG, 6466 Gründau Ausbildung eines trommeltrockners zur erhitzung von mineralstoffen fuer die herstellung eines bituminoesen mischgutes, insbesondere fuer den strassenbau
FR2327048A1 (fr) * 1975-10-08 1977-05-06 Creusot Loire Dispositif pour la preparation de produits principalement utilises pour la construction et l'entretien des routes
DE2617839C3 (de) * 1976-04-23 1979-01-18 Wibau (Westdeutsche Industrie- Und Strassenbau-Maschinen-Gesellschaft Mbh), 6466 Gruendau Einrichtung zum Aufbereiten von bituminösem Mischgut mit einer im Gleichstrom befeuerten Drehtrommel
US4165184A (en) * 1977-06-21 1979-08-21 Iowa Manufacturing Company Of Cedar Rapids, Iowa Apparatus for asphaltic concrete hot mix recycling
NL7812532A (nl) * 1977-12-27 1979-06-29 Mendenhall Robert Lamar Werkwijze en inrichting voor het vervaardigen van een asfaltbetonmateriaal.
FR2441682A1 (fr) * 1978-11-17 1980-06-13 Creusot Loire Dispositif pour la preparation de produits enrobes bitumineux pour revetements routiers
FR2449162A1 (fr) * 1979-02-16 1980-09-12 Creusot Loire Procede de preparation en continu de produits enrobes bitumineux de couleur quelconque
DE2936341C2 (de) * 1979-09-08 1985-08-14 Alfelder Eisenwerke Carl Heise KG vorm. Otto Wesselmann & Cie., 3220 Alfeld Verfahren und Vorrichtung zum Aufbereiten von bituminösem Mischgut
ATE5904T1 (de) * 1980-02-12 1984-02-15 Creusot-Loire Vorrichtung zur herstellung umhuellter bituminoeser produkte fuer strassendecken.

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Publication number Priority date Publication date Assignee Title
US2815940A (en) * 1954-02-23 1957-12-10 Walter M Madsen Aggregate dryer
US4147436A (en) * 1977-08-29 1979-04-03 Cmi Corporation Method and apparatus for producing hot mix asphalt utilizing recyclable asphalt aggregate
US4174181A (en) * 1978-04-17 1979-11-13 Cmi Corporation Method and apparatus for establishing aggregate cascade zones in an apparatus for producing hot mix asphalt

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738539A (en) * 1985-05-24 1988-04-19 Ermont S. A. Process and device for fabricating bituminous coated products from aggregates enclosing a large quantity of fines
US5470146A (en) 1986-06-30 1995-11-28 Standard Havens, Inc. Countercurrent drum mixer asphalt plant
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Also Published As

Publication number Publication date
FR2473578B1 (fr) 1986-03-21
CA1152737A (fr) 1983-08-30
JPS56102961A (en) 1981-08-17
EP0032468A2 (fr) 1981-07-22
JPS6029546B2 (ja) 1985-07-11
EP0032468A3 (fr) 1982-01-13
FR2473578A1 (fr) 1981-07-17

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